Figure 1

Population growth dynamics for different types of density regulation. (a) The effective population growth for different population sizes under deterministic conditions (as a result of the Maynard Smith and Slatkin formula) is shown. (b) The development of population sizes over time including demographic stochasticity (adding a normally distributed random term with μ=0 and σ=20) is shown. Grey dashed lines mark the extinction threshold (population sizes <=0) and the carrying capacity (carrying capacity, K=100; growth rate, R=2).